Bag loader



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Patented Jan. 14, 1930 UNITED STATES PATENT OFFICE PERCY HORSFALL, OF PINGELLY, WESTERN AUSTRALIA, AUSTRALIA BAG LOADER Application filed July 14, 1928, Serial No.

the sides or rear of the truck;

An important feature of the invention consists of a lever arrangen'ient, whereby the fulcrum about which the effort'is exerted can be raised as the bag is moved up the loader.

The invention will, however, more readily be understood by reference to the accompanyin drawings, in which ,igure 1 is a perspective view of the bag loader inthe inclined position as it will ap- Fig. 2 is a side elevation showing the bag loader in its lowermost or loading position; Fig. 3 is a similar view on a larger scale, in which the dotted lines show the position of the bag carrier shortly after the raising efi'or is commenced; v Fig. 4 is a perspective View of the arrangement constituting the movable fulcrum and appurtenant parts; i

Fig. 5 is a side'elevation showing the relative disposition of the carrier, link, and workin levers as they will appear when a lifting effbrt is about to be applied Fig. 6 is another view of the parts shown in Fig 5,.except that the lifting effort has now been applied, with the result that the carrier has beenmoved to a higher position; Fig. 7 is a perspective view .showing the sliding U-shaped support that engages the carrier or cradle hooks;

Fig. 8 is a perspective view showing the relative disposition of the longitudinal angle iron frame members;

Fig. 9 is a side elevation showing the relative disposition of the working levers, links and pawls, and; Fig. 10 is a side elevation showing the carrier and its appurtenant parts as they will appear when the tipping position is reached.

Referring to these drawings, 10. 11, 12 and 292,780, andln Australia July 25, 1927.

13 are longitudinal angle iron frame members. Of the foregoing, the members 10 and 11 have their Open angles facing each other, and at eachend are conveniently connected to a wooden block 10 and 11 or other support, so as to maintain them in the correct relative position. The angle iron members 12 and 13 are spaced insidethe members 10 and 11, so that one of their flat faces is turned upwardly. A longitudinal channel or space is left at each side between each of the corresponding pairs of angle iron members. This is made possible by using a ph'irality of metal connecting stops, such as 14, 15 and 16. Adapted to slide upwardly in the space formed between the inner angles of the inner angle iron members and the corresponding lower faces of the outer angle iron members, is a Ushaped support 17. Such support has its downward movementlimited V of i by one of the stops, such as 16, which is made so as to project inwardly to a greater extent than the other stops. There are two short angle iron members 18 and 19 which form part of what may be termed the movable fulcrum assembly. Each of these short angle iron members is positioned so that one-of its faces will be on the under-side of the upper faces of the inner angle iron frame members 12 and 13. The angle iron members 18 :30

and 19 are held intheir relative spaces by means of connecting bars 20 and 21. A transverse rod 22 freely passes through each of the short angle iron members and connected to such rod on one side is a pawl 23 that is I adapted to move in the channel or space between the angle iron frame members 10 and 12, whereby it will engage the metal stops,

suchas 14, 15, or 16, according to its position, and therefore hold the movable fulcrum assembly against downward movement. The transverse rod 22 also has connected a short pawl-releasing'lever 2 1. There is a working arm 25 of the apparatus which is connected to oris extended as two parallel working levers 26 and 27, suitably'stayed by transverse bars. A fulcrum rod 28 passes through the short angle iron members 1.8 and 19 and through the working levers 26 and 27. The ends of the working levers are pivoted to two parallel loosely passing through the lower portion of the curved carrier supports, such as 31, is rollers being so spaced as normally to track on the upper face of the angle iron frame members 12' and 13'. It is to be herein noted that these rollers 34 and 35 at times travel upon the track formed by the bars 12' and 13 andthat the levers 26, 27, 29 and will swing upon their pivoted connections between these bars 12 and 13 so that when the axle contacts with these levers, the axle will be permit-ted to ride thereupon. Attached to the ends of'the curved carrier supports, such as 31, there are curved cradle or carrier members 36' and 37 connected by transverse members 38,39 and 40. Attached to the transverse member 39 are holding hooks 41 and 42. At the upper end of the angle iron frame members there is a transverse end bar 43.

. The apparatus operates as follows:

\Vhen the cradle or carrier is in its lowermost or loading position, it will be placed as is shown in Figs. 2 whereat the movable fulcrum is retained against downward slid by the pawl 23 engaging one ing movement of the stops. The bag is dumped or rolled on to the carrier or cradle and the working arm 25 is raised, which, produces the result illustrated in dotted lines in Fig. 3, namely, that the axle 35 isengaged by the levers 26 and. 27 and the carrier is raised to a position whereat the rollers 34 and 35 leave the tracks 12 and 13. This axle 35 will then ride upon the curved levers 26 and 27 and the carrier will move by gravity until the rollers 34 and 35 again engage their respective tracks 12 and 13 at points, above the fulcrum point of said leverswhich is provided by therod 28. Almost simultaneously the holding hooks 41 and 42 take up a'position on the under-side of V the sliding U-shaped support 17. lVh-en'the working arm 25 is pulled; or pushed down wardly, the eifect is that the working levers 26' and 27 fulcrum about the rod 28 andexert an effort on the connecting links 29 and 30, and so to the carrier or cradle, which is pushed upwardly. This action is effected by the rollers 34 and 35 running on the track formed by the angle iron frame. members12 and 13. When the working arm has been pushed or pulled downwardly, it is again raised. The first effect: is that the cradle or carrier is maintained at its new raised position by reason of the fact that the pawl a portable frame,

33 is held against one of the metal stops, such as 14, 15 or 16. The next efiect is that what may be termed the fulcrum assembly is slid upwardly, or in other words. the fulcrum is raised to a higher level. This fulcrum assembly, which is illustrated in Fig. 4, consists of the short angle iron members 18 and 19, the fulcrum rod 28, the connecting bars 20' and 21, transverse rod 22, pawl 23, and pawl-releasing lever 24. The whole of such assembly is raised and is held in a new but higher position by reason of the fact that the pawl 23 bears against a higher metal stop. The next downward pull on the working arm 25 results in the cradle or carrier being pushed to a still higher position. The next upward lift of such working arm results in the fulcrum being raised to another higher point. A stage is reached when on commencing or during the downward pull of the working arm 25-, the cradle or carrier has gone as far as is permitted, namely, as illustrated in Fig. 10 the ends of the hooks 41 and 42' abut against the end bar 43. Further downward effort on the working arm 25 results in the cradle or carrier being turned, as is shown dotted lines in Fig. 10. In other words, it results in the bag being dumped at the higher level desired. When the dumping angle has been reached, the hooks 41 and 42 have disengaged themselves from the sliding- U-shaped support 17 and on releasing the pawl-releasing lever 24, the carrier or cradle can, by a, very slight effort, be made to take up the initial or loading position illustrated in Figs. 5 and 6. VVhe-nit is desired to dump at a higher level, the apparatus is inclined at a steeper angle I claim.

1. A bag loader comprising a portable,

frame, a carrier adapted to travel upon said frame, a manually operable lever, connection means between said lever and carrier for causing said carrier to. travel upon said frame with operation of the lever, a movable fulcrum for said lever slidable upon said frame, and means for fixedly holding sa d movable fulcrum at various points upon said frame 2. A bagloa'der comprising an inclined track, a bag carrier adapted to travel upon said track, a'movable fulcrumcarried by'said track, a lever: connected to said fulcrum and having means'operatively engaged with the bag carrier whereby when power is applied to said lever the bag carrier will be caused to move upwardly upon said track, and means for causing said carrier to dump the bag carried thereby upon reaching the uppermost position upon said track.

3. A bag loader a track arranged upon said frame, a bag carrier, rollers for mounting'said bag carrier upon said track, a working lever having a movable fulcrum, means for operacomprising in combination tively connecting said lever to said bar carrier, and pawl means between said lever and track whereby when said working lever is moved upwardly upon said track and then moved in an opposite direction, it will cause its fulcrum to move at higher points upon said track.

4. A bag loader comprising in combination a portable frame, an inclined track arranged upon said frame, a bag carrier adapted to travel upon said track, a movable fulcrum adapted to assume various positions upon said frame, a lever connected to said fulcrum, links for connecting said lever to said carrier and means for retaining said fulcrum at various positions upon said frame.

5. A bag loader comprising in combination an inclined track, a carrier adapted to move upon said track, means for manually causing said carrier to move upwardly upon said inclined track, means for retaining said carrier at various positions upon said track and means for preventing said carrier from overbalancing backwardly during its upward travel upon said track.

6. A bag loader comprising in combination an inclined track, a bag carrier, rollers for supporting said bag carrier upon said track, a holding member movably mounted upon said track, and hooks carried by said carrier for engagement with said movable holding member for preventing the carrier from swinging upon said rollers which support the same upon the inclined track.

7 A bag loader comprising in combination an inclined track, a bag carrier, rollers for supporting said carrier and adapted to travel upon said track, a movable holding member, hooks carried by said carrier and adapted at times to engage said movable holding member so as to prevent backward overbalancing of the carrier, and means carried by the track engageable by said hook whereby the latter may be released from said movable holding member.

8. A bag loader comprising in combination an inclined track, a bag carrier movable upon said track, a movable holding member slidably mounted upon said track, hooks carried by said bag carrier and adapted to engage said movable holding member, and means for simultaneously releasing said hooks from said movable holding member and tipping said bag carrier whereby the-bag may be dis charged therefrom.

9. A bag holder comprising in combination parallel and longitudinal frame members, a track arranged upon said frame members, a carrier adapted to be carried upon said track, two connecting members capable of sliding relative to the longitudinal frame members, a fulcrum rod passed through said two connected members, a working arm connected to said fulcrum rod and a pair of Working levers connecting said working arm with said bag carrier. I

10. A bag loader comprising in combination a portable track, a bag carrier adapted to travel upon saidtrack, a movable fulcrum adapted to travel uponsaid track, a working arm supported by said movable fulcrum, a pair of working levers connecting said working arm with said carrier, and a pawl carried by said movable fulcrum and adapted to en'- gage said track for retaining said movable fulcrum from travelling in one direction.

11. A bag loader comprising in combination an inclined track, a bag carrier adapted to travel upon said track, a movable fulcrum adapted to travel upon said track, a working lever carried by said fulcrum, a pawl carried by said movable fulcrum and adapted to engage said track to prevent downward movement of said movable fulcrum, means forconnecting said carrier with said working lever and pawls carried by said carrier for engagement with said track whereby the carrier will be prevented from downward movement thereupon.

12. A bag loader comprising in combination a track, a bag carrier comprising a cradle adapted to travel upon said track, a working lever, links connecting said working lever with the cradle of the bag carrier, a travelling fulcrum for said working lever and means for retaining said travelling fulcrum at various positions upon said track.

13. A bag loader comprising in combination a pair of inclined members, a track secured upon each inclined member, stops carried by said track, a bag carrier adapted to travel upon said track, a movable fulcrum, a

working lever carried by said fulcrum, means for operatively connecting saidlever with said carrier and pawls carried by said car rier and movable fulcrum for engagement with said stops whereby the carrier and movable fulcrum may be retained in various positions upon sa1d track.

tion a-support consisting of a pair of spaced and parallel angle bars, an angle bar secured to each of said spaced angle bars of the support forming a track, a bag carrier.

adapted to travel upon said track, said bag carrier comprising a pivotally supported cradle, a pivotally supported'working lever,

14. A bag loader comprising in COIl'lblI'lfimeans whereby when said carrier is forced to: one end of said track the hooks will be disengaged from said sliding member and the cradle tilted whereby a bag supported thereby may bedumped therefrom.

15. A bag loader comprising in combination a portable support, an inclined track arranged upon said support, a plurality of stops connecting said track from said support, a carrier adapted to travel upon said track, a movable fulcrum adapted to travel upon said track, a Workingv lever supported by said fulcrum, means for connecting said working lever with said carrier, a U-shaped sliding member arranged upon said frame, hooks carried by said carrier and adapted to engage said U-shaped sliding member and pawls. carried by said carrier and movable fiulorum for engagement with said stops whereby they may be retained at various positions upon said track.

Dated this 30th day of May, 1928.

PERCY HORSFALL, 

